Exhibit 99 FOR IMMEDIATE RELEASE Contacts: Bruce Weldele and Brent Marvosh (406) 761-2200 MERGER OF UNITED FINANCIAL CORP. AND HERITAGE BANCORPORATION COMPLETED Great Falls, MT - February 3, 1998. United Financial Corp. (NASDAQ-UBMT) and Heritage Bancorporation completed their previously announced merger today. 475,000 shares of United common stock were issued to shareholders of Heritage in the merger. Former Heritage shareholders now own approximately 30% of the outstanding shares of United. Bruce K. Weldele, the Chairman of the Board of United, said that: "The combination of United and Heritage has created a banking company with approximately $183 million of assets, $88 million in loans and $137 million in deposits. We look forward to better serving our market and pursuing a more growth-oriented strategy based on the strength of the combined banks." United also announced the election of the following officers: John M. Morrison President and CEO Bruce K. Weldele Chairman of the Board Kurt R. Weise Chief Operating Officer G. Brent Marvosh Vice President/Chief Financial Officer Kevin P. Clark Secretary United is a savings and loan holding company headquartered in Great Falls, MT. United has 5 full service branches and 4 loan production offices in Montana.